

353 



On my visit to Heligoland in the summer of 1901 I mentioned 

 my find to Dr. Kuckuck and he told me that he had found tetra- 

 spores both on Ch. virgatula and on Ch. seciiiuluta which is very 



oymoL 



Fig. 54. Chantransia virgatula Harv.) Thur. a, b, c. Portions of plant witfa tetraspores; d, transverse section 



ol' basal disc. <j SO : 1 ; (> and c- 100 : 1 ; d '250 : 1. 



closely related to the former, and he has sinee sent me his slides 

 for examination and the specimens in them exeept for some minor 

 difierences, seem to correspond exactly with my Færoese material. 

 In fig. 53 I have shown portions of the plant in question. Both 

 kinds of spores often occurred on the same plant, frequently even 



